Optical lenses

What is the primary function of a convex lens?

• Diverge light rays

• Absorb light rays
  

• Converge light rays

• Reflect light rays

Which type of lens is thinner in the middle and thicker at the edges?

• Convex lens

• Concave lens

• Cylindrical lens

• Biconvex lens

Which of the following uses convex lenses to function?

• Magnifying glass

• Rear-view mirror

• Sunglasses

• Car side mirrors

What type of image does a convex lens form when the object is placed beyond the focal point?

• Virtual and upright

• Real and inverted

• Virtual and inverted

• Real and upright

What kind of lens is used to correct nearsightedness (myopia)?

• Convex lens

• Concave lens

• Plano-convex lens

• Biconcave lens

Which of the following statements is true about concave lenses?

• They produce real images

• They produce virtual, upright images

• They always magnify objects

• They converge light rays

In a convex lens, what is the point called where parallel light rays meet after passing through the lens?

• Principal axis

• Focal point

• Center of curvature

• Optical center

What kind of lens can produce a virtual image larger than the object?

• Concave lens

• Convex lens

• Plano-convex lens

• Cylindrical lens

Which of the following is a common application of concave lenses?

• Binoculars

• Projectors
  

• Camera lenses

• Corrective lenses for nearsightedness

What happens to light rays when they pass through a concave lens?

• They converge to a point

• They bend toward the optical axis

• They diverge

• They are reflected back